Display apparatus and control method thereof

1. A display apparatus comprising: a storage unit which is provided to store biometric information of an individual user and metadata corresponding to the biometric information; a biometric information input unit through which biometric information of a plurality of users is input; a display unit; a user input unit configured to receive a user input; a controller which determines metadata corresponding to a first user by comparing the input biometric information of the first user with the stored biometric information, determines metadata corresponding to a second user by comparing the input biometric information of the second user with the stored biometric information, and generates information of a user group comprising the first and second users based on common metadata between the metadata of the first user and the metadata of the second user; and a user interface (UI) generator which is controlled by the controller to generate and display on the display unit a first menu button for a user to select whether to log in with a user group identification (ID) or with an individual user ID via the user input unit, and in response to the individual user ID being selected when the plurality of users are present, to generate and display on the display unit a second menu button for the user to select, via the user input unit, one of the plurality of users to log in with the individual user ID.

2. The display apparatus according to claim 1 , wherein the information of the user group comprises at least one of the user group ID, a visit and use history of the user group, environment setup information of the user group, and an address book of the user group.

3. The display apparatus according to claim 1 , wherein the user interface (UI) generator generates and displays on the display unit a third menu button for setting the user group ID, wherein the controller sets the input biometric information of the plurality of users as a single user group identification (ID) and stores the single user group ID in the storage unit if the third menu button is selected via the user input and the biometric information of the plurality of users is input through the biometric information input unit.

4. The display apparatus according to claim 1 , wherein the biometric information comprises at least one of a face, a fingerprint, an iris, a retina and a voice of a user.

5. The display apparatus according to claim 1 , wherein the metadata comprises at least one of environment setup data, an address book, a visit record and a viewing history of the display apparatus.

6. The display apparatus according to claim 1 , further comprising: a broadcasting signal receiver which receives a broadcasting signal; and a signal processor which processes the received broadcasting signal.

7. The display apparatus according to claim 6 , further comprising a communication unit which communicates with an external web server.

8. A control method of a display apparatus, the control method comprising: storing biometric information of an individual user and metadata corresponding to the biometric information; inputting biometric information of a plurality of users; determining metadata corresponding to a first user by comparing the input biometric information of the first user with the stored biometric information, determining metadata corresponding to a second user by comparing the input biometric information of the second user with the stored biometric information; generating information of a user group comprising the first and second users based on common metadata between the determined metadata of the first and second users; generating and displaying a first menu button for a user to select whether to log in with a user group identification (ID) or with an individual user ID; and in response to the individual user ID being selected when the plurality of users are present, generating and displaying a second menu button for the user to select one of the plurality of users to log in with the individual user ID.

9. The control method according to claim 8 , wherein the information of the user group comprises at least one of the user group ID, a visit and use history of the user group, environment setup information of the user group, and an address book of the user group.

10. The control method according to claim 8 , further comprising generating and displaying a third menu button for setting the user group ID; and setting and storing the input biometric information of the plurality of users as a single user group identification (ID) if the third menu button is selected and the biometric information of the plurality of users is input.

11. The control method according to claim 8 , wherein the biometric information comprises at least one of a face, a fingerprint, an iris, a retina and a voice of a user.

12. The control method according to claim 8 , wherein the metadata comprises at least one of environment setup data, an address book, a visit record and a viewing history of the display apparatus.

13. The control method according to claim 8 , further comprising: receiving a broadcasting signal; and processing the received broadcasting signal.

14. The control method according to claim 13 , further comprising communicating with an external web server.

15. A non-transitory computer-readable recording medium storing a program to be executed by a computer, the program when executed performing a control method comprising: storing biometric information of an individual user and metadata corresponding to the biometric information; inputting biometric information of a plurality of users; determining metadata corresponding to a first user by comparing the input biometric information of the first user with the stored biometric information, determining metadata corresponding to a second user by comparing the input biometric information of the second user with the stored biometric information, and generating information of a user group comprising the first and second users based on common metadata between the determined metadata of the first and second users; generating and displaying a first menu button for a user to select whether to log in with a user group identification (ID) or with an individual user ID; and in response to the individual user ID being selected when the plurality of users are present, generating and displaying a second menu button for the user to select one of the plurality of users to log in with the individual user ID.

16. The display apparatus according to claim 1 , wherein the biometric information input unit comprises one or more of a camera, a face recognition sensor, a fingerprint recognition sensor, an iris recognition sensor, a retina recognition sensor, or a microphone.

17. The display apparatus according to claim 1 , wherein the controller automatically performs a login with the user group ID when the plurality of users is present.

18. The control method according to claim 8 , further comprising automatically performing a login with the user group ID when the plurality of users is present.

19. The control method according to claim 15 , further comprising automatically performing a login with the single user group ID when the plurality of users is present.